Who came first Galen or Hippocrates?

Hippocrates came first, as he lived from around 460 to 370 BCE, while Galen lived later, from 129 to around 216 CE. Hippocrates is often referred to as the "Father of Medicine" and is known for his contributions to the systematic study of clinical medicine. Galen built upon Hippocratic ideas and made significant advancements in anatomy and physiology during the Roman Empire.